Valve control for pneumatic tires



J. N. NEWSOM.

VALVE CONTROL FOR PNEUMATIC TIRES.

APPLICAT ION FILED FEB- 51 1920.

Patented Oct.- 4, 1921.

VE/V/Uf? J M NEW UM Gav t 8 6 y -UNITED STAT SYPATENT OFFICE.

'. JOSEPH To all whom it may concern:

FANY, OF-ST." LOUIS, IQI ISS OURI,

1 Y vALvE courier;-

Be it known that I, J OSEPH'N. NnwsoM, acitizen of the United States of America, a resident of the city of St. Louis, in the State of 'Missouri, have invented certain new and v useful Improvements in Valve Controls for forth hereina ter,

simple and inexpensive construction,

ing drawing,

- devid e illustrated by Fig. III as in use, an

Pneumatic Tires, of which the following is V a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to improvements in valve controls for pneumatic tires and my principal object is to provide means, of

for facilitating the operation of tire deflating,

which means comprises a manipulative eleinent for engagement with the valve stem to move to unseated or open position and an element coacting therewith to hold and lock the same, during the deflating,: and, until manually released. p

A further objectis to provide such a deflating device with a hoodwhereby it may serve as a valve cap and to further provide the cap with a threaded-bore whereby the device may serve as a means for engaging the valve stem and moving it to a'fully seated position.' p

My improvements consist in the novel construction, arrangement and combination of parts, as full clearly and concisely set.

definitely pointed out in my claims and illustrated by the accompanyin which Figure I is an elevationof a device constructed in accordance with my invention, as in use, to hold'and look a tire valve in open position, the valve-containing tube being shown in cross section. v i

'Fig. II is a similar view, partly in section, showing the device as employed to hold the tire valve to fully seated position.

Fig. III shows in perspective view of a modification of the device designed for use only as a deflating tool. i 1 ,Fi IV is a'plan view of the form of Fig. V is-a sectional line VV 'of Fig. I.

Referring to the drawing, b numerals, 6 designates the tube proper; V the valve seat therein; 8.the valve; 9 thevalve-stem and 10 the valve closing spring. 3

The deflating tool or element comprises a y, su h s 1. of l g h su ci n toplan taken on the Specification of Letters Patent;

r03 mammals;

1v. nnwsom, or s r," Lours', missoum. assreivoa T0 1 nnwsoat vary com-- I I V Patentedflctk ig- 1921. Application filed February 5,1920. Serial No. 356,544. I: I I r v i v if extend into'the tubev 6 a distanceto engage erence there is formed in the extremity of the bit a notch 13 wherebyfthe valve stem is held centralized relative to the key.

At pointson the stemof the key, remote from the wards 12 are the opposed shoulders or stops 14 which serve to limit the depression of the valve stem beyond a point where its operating spring 10 will be compressed 'to a sectional dimension obstructing the effluent air. I p

The key is provided with a. manipulating element such as the externally knurled cap 361' the perforate bow 15 (shown in Fig. "The keyhaving the cap is provided with an axial, threaded, bore 16 for engagement upon the threaded portion17 of the-valve stem as shown in Fig. II to serve as a means for drawing the stem in a direction to bring v the valve to fluid tight contact with the seat 7. v I

Thelocking means .for'the deflating tool comprises a pair of opposed, fixed wards to lock the key in a position holding the valve in open or deflating position. I

By preference such I as inturned', segmental flangesof'a sleeve 19 which is forced into the upper end of the tube 6, and by further preference the sleeve is provided with an outwardly turned flange '20, at its uppermost end which determines the placement of the wards 18 car.- ried by the sleeve. Hence by. forcing the sleeve within the tube with the flange 20, resting upon the endof the tube the ward flanges will be properly related to the length of key stem to relate the wards 12 and 18.

The stops 14 as 'best shown in Fig. I serve to hold the cap end spaced from the I 18 for coaction with the wards 12 of the key. I

fixed wards are made tube end for free. passage of the efliuent rangedfor fitment in a valve tube to be engaged by a valve-stem depressing. key.

2. In a valve control the combination of a y, 9! d pressing a. valYe $9 3, hav ng d air at a time when the key is holding the wards and; an, element, having wards for engagement with the valve stem to move it V coaction with the wards of the key, for fittodeflating posit-ion, and wards inlsgidkey 10" ment in avalve tube. t for coaction with-thewards of the sleeve for 3. In combination with a valve tube hav-. locking the key to deflating position; v e in? a, seat, a valve and a" spring actuated Intestimo'ny that I claim the foregoing I va V e-stem, a sleeve having wards and means hereunto afiix my signature.

for determining its location in thetube, and V '5' e manipulative element having; a key for 4 N. NEWSOM. 

